Ceramic Tile over Terrazzo

Old 10-26-03, 08:08 AM
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Ceramic Tile over Terrazzo

I plan on installing ceramic tile in my bedroom, after pulling up the ugly existing carpet we discovered terrazzo underneath. Can I lay the ceramic tile directly over the terrazzo or does there need to be some type of sub floor and if so what is the best type of sub floor to use?
Old 10-26-03, 01:35 PM
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You can go over it provided there are no cracks. If there are cracks you will need a crack isolation membrane like Ditra. Available from:

Old 10-26-03, 02:41 PM
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ypu also want to strip any wax off the terrazzo and maybe think about scarifying the surface to geta better bond with the mortar
Old 10-29-03, 08:13 PM
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Thanks, this is very helpful. The floor is in excellent condition so I don't think I need the membrane but what would I use to scarify the floor?
Old 10-30-03, 06:55 AM
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Terrazzo can be beautiful sure you want to cover it? Another option would be to bond Nobleseal to the substrate with Noblebond 21 which does not require the Terrazzo to be scarfied but it does need to be free of wax,dirt ect. www.noblecompany.com waterproofing,crack,& sound isolation

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